The diaphragm of earphones is the most fragile part of the sound unit, because in order to achieve high efficiency, the diaphragm material is very thin, so it is more susceptible to physical damage, and such damage is irreparable. It can be said that if the diaphragm of an earplug goes wrong, it is basically useless. I think this is something that every consumer does not want to see. So how to pro...
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